I would like to get some recommendations for vegan food in Bangkok, I am staying near the phrakanong Bts, I don't want to spend too much money for vegan food, is there a way to get cheap vegan food around here?

All the supermarkets have rice, oats, pasta, noodles etc.. Potatoes, other veggies and fruits are available at the markets. Its an easy and cheap place to be vegan. If you meant restaurants then check Happy Cow. Khun Churn and May Veggie Home are close to you on the BTS. For cheaper options try the veg stall at Terminal 21 or in MBK.